diff options
Diffstat (limited to '1.2-netsec/apps/app_milliwatt.c')
| -rw-r--r-- | 1.2-netsec/apps/app_milliwatt.c | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/1.2-netsec/apps/app_milliwatt.c b/1.2-netsec/apps/app_milliwatt.c new file mode 100644 index 000000000..9c46689f4 --- /dev/null +++ b/1.2-netsec/apps/app_milliwatt.c @@ -0,0 +1,170 @@ +/* + * Asterisk -- An open source telephony toolkit. + * + * Copyright (C) 1999 - 2005, Digium, Inc. + * + * Mark Spencer <markster@digium.com> + * + * See http://www.asterisk.org for more information about + * the Asterisk project. Please do not directly contact + * any of the maintainers of this project for assistance; + * the project provides a web site, mailing lists and IRC + * channels for your use. + * + * This program is free software, distributed under the terms of + * the GNU General Public License Version 2. See the LICENSE file + * at the top of the source tree. + */ + +/*! \file + * + * \brief Digital Milliwatt Test + * + * \ingroup applications + */ + +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <unistd.h> +#include <errno.h> + +#include "asterisk.h" + +ASTERISK_FILE_VERSION(__FILE__, "$Revision$") + +#include "asterisk/lock.h" +#include "asterisk/file.h" +#include "asterisk/logger.h" +#include "asterisk/channel.h" +#include "asterisk/pbx.h" +#include "asterisk/module.h" + +static char *tdesc = "Digital Milliwatt (mu-law) Test Application"; + +static char *app = "Milliwatt"; + +static char *synopsis = "Generate a Constant 1000Hz tone at 0dbm (mu-law)"; + +static char *descrip = +"Milliwatt(): Generate a Constant 1000Hz tone at 0dbm (mu-law)\n"; + +STANDARD_LOCAL_USER; + +LOCAL_USER_DECL; + +static char digital_milliwatt[] = {0x1e,0x0b,0x0b,0x1e,0x9e,0x8b,0x8b,0x9e} ; + +static void *milliwatt_alloc(struct ast_channel *chan, void *params) +{ +int *indexp; + indexp = malloc(sizeof(int)); + if (indexp == NULL) return(NULL); + *indexp = 0; + return(indexp); +} + +static void milliwatt_release(struct ast_channel *chan, void *data) +{ + free(data); + return; +} + +static int milliwatt_generate(struct ast_channel *chan, void *data, int len, int samples) +{ + struct ast_frame wf; + unsigned char buf[AST_FRIENDLY_OFFSET + 640]; + int i,*indexp = (int *) data; + + if (len + AST_FRIENDLY_OFFSET > sizeof(buf)) + { + ast_log(LOG_WARNING,"Only doing %d bytes (%d bytes requested)\n",(int)(sizeof(buf) - AST_FRIENDLY_OFFSET),len); + len = sizeof(buf) - AST_FRIENDLY_OFFSET; + } + wf.frametype = AST_FRAME_VOICE; + wf.subclass = AST_FORMAT_ULAW; + wf.offset = AST_FRIENDLY_OFFSET; + wf.mallocd = 0; + wf.data = buf + AST_FRIENDLY_OFFSET; + wf.datalen = len; + wf.samples = wf.datalen; + wf.src = "app_milliwatt"; + wf.delivery.tv_sec = 0; + wf.delivery.tv_usec = 0; + wf.prev = wf.next = NULL; + /* create a buffer containing the digital milliwatt pattern */ + for(i = 0; i < len; i++) + { + buf[AST_FRIENDLY_OFFSET + i] = digital_milliwatt[(*indexp)++]; + *indexp &= 7; + } + if (ast_write(chan,&wf) < 0) + { + ast_log(LOG_WARNING,"Failed to write frame to '%s': %s\n",chan->name,strerror(errno)); + return -1; + } + return 0; +} + +static struct ast_generator milliwattgen = +{ + alloc: milliwatt_alloc, + release: milliwatt_release, + generate: milliwatt_generate, +} ; + +static int milliwatt_exec(struct ast_channel *chan, void *data) +{ + + struct localuser *u; + LOCAL_USER_ADD(u); + ast_set_write_format(chan, AST_FORMAT_ULAW); + ast_set_read_format(chan, AST_FORMAT_ULAW); + if (chan->_state != AST_STATE_UP) + { + ast_answer(chan); + } + if (ast_activate_generator(chan,&milliwattgen,"milliwatt") < 0) + { + ast_log(LOG_WARNING,"Failed to activate generator on '%s'\n",chan->name); + LOCAL_USER_REMOVE(u); + return -1; + } + while(!ast_safe_sleep(chan, 10000)); + ast_deactivate_generator(chan); + LOCAL_USER_REMOVE(u); + return -1; +} + +int unload_module(void) +{ + int res; + + res = ast_unregister_application(app); + + STANDARD_HANGUP_LOCALUSERS; + + return res; +} + +int load_module(void) +{ + return ast_register_application(app, milliwatt_exec, synopsis, descrip); +} + +char *description(void) +{ + return tdesc; +} + +int usecount(void) +{ + int res; + STANDARD_USECOUNT(res); + return res; +} + +char *key() +{ + return ASTERISK_GPL_KEY; +} |